--- a/src/hotspot/cpu/x86/gc/shared/barrierSetAssembler_x86.cpp	Wed Jun 13 06:35:04 2018 +0200
+++ b/src/hotspot/cpu/x86/gc/shared/barrierSetAssembler_x86.cpp	Wed Jun 13 10:01:53 2018 +0200
@@ -187,6 +187,27 @@
   }
 }
 
+#ifndef _LP64
+void BarrierSetAssembler::obj_equals(MacroAssembler* masm,
+                                     Address obj1, jobject obj2) {
+  __ cmpoop_raw(obj1, obj2);
+}
+
+void BarrierSetAssembler::obj_equals(MacroAssembler* masm,
+                                     Register obj1, jobject obj2) {
+  __ cmpoop_raw(obj1, obj2);
+}
+#endif
+void BarrierSetAssembler::obj_equals(MacroAssembler* masm,
+                                     Register obj1, Address obj2) {
+  __ cmpptr(obj1, obj2);
+}
+
+void BarrierSetAssembler::obj_equals(MacroAssembler* masm,
+                                     Register obj1, Register obj2) {
+  __ cmpptr(obj1, obj2);
+}
+
 void BarrierSetAssembler::try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
                                                         Register obj, Register tmp, Label& slowpath) {
   __ clear_jweak_tag(obj);